package com.hunan.yllxy.util;

import lombok.extern.slf4j.Slf4j;
import org.apache.poi.util.IOUtils;

import java.io.*;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;

/**
 * @Author: 刘华
 * @Date: 2024/3/29 0029 15:01
 * @Version 1.0
 */
@Slf4j
public class ZipUtils {

    public static List<File> getListFile(File srcFile) {
        List<File> fileList = new ArrayList<>();
        if (srcFile.isFile()) {
            fileList.add(srcFile);
            return fileList;
        }
        File[] listedFiles = srcFile.listFiles();
        if (listedFiles != null && listedFiles.length > 0) {
            for (File listedFile : listedFiles) {
                List<File> files = getListFile(listedFile);
                if (StringUtils.isNotNull(files)) {
                    fileList.addAll(files);
                }
            }
        }
        return fileList;
    }

    public static HashMap<String, File> getMapFile(File srcFile) {
        HashMap<String, File> fileHashMap = new HashMap<>();
        if (srcFile.isFile()) {
            String name = srcFile.getName();
            boolean b = name.endsWith("zip");
            if (!b) {
                int i = name.lastIndexOf(".");
                String substring = name.substring(0, i);
                fileHashMap.put(substring, srcFile);
                return fileHashMap;
            }
        }
        File[] listedFiles = srcFile.listFiles();
        if (listedFiles != null && listedFiles.length > 0) {
            for (File listedFile : listedFiles) {
                HashMap<String, File> listFile = getMapFile(listedFile);
                if (StringUtils.isNotNull(listFile)) {
                    for (String s : listFile.keySet()) {
                        File file = listFile.get(s);
                        fileHashMap.put(s, file);
                    }
                }
            }
        }
        return fileHashMap;
    }

    /**
     * 压缩shape文件
     */
    public static String zipFile(File file) {
        List<File> files = getListFile(file);
        ZipOutputStream zipOut = null;
        String zipFile = null;
        InputStream input = null;

        try {
            String path = file.getPath();
            zipFile = path + File.separator + file.getName() + ".zip";
            File zip = new File(zipFile);
            zip.createNewFile();
            zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
            for (File file1 : files) {
                try {
                    input = new FileInputStream(file1);
                    zipOut.putNextEntry(new ZipEntry(file1.getName()));
                    IOUtils.copy(input, zipOut);
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    try {
                        input.close();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
            zipOut.close();

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (zipOut != null) {
                try {
                    zipOut.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        return zipFile;

    }

    /**
     * 压缩shape文件
     */
    public static String zipFile(List<File> files, String path) {
        ZipOutputStream zipOut = null;
        String zipFile = null;
        InputStream input = null;

        try {
            File dirFile = new File(path);
            zipFile = path + File.separator + dirFile.getName() + ".zip";
            File zip = new File(zipFile);
            zip.createNewFile();
            zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
            for (File file1 : files) {
                try {
                    input = new FileInputStream(file1);
                    zipOut.putNextEntry(new ZipEntry(file1.getName()));
                    IOUtils.copy(input, zipOut);
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    try {
                        input.close();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
            zipOut.close();

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (zipOut != null) {
                try {
                    zipOut.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        return zipFile;

    }

    /**
     * zip解压
     *
     * @param srcFile     zip源文件
     * @param destDirPath 解压后的目标文件夹
     * @return list 解压文件的路径合集
     * @throws RuntimeException 解压失败会抛出运行时异常
     */
    public static List<String> unZipFiles(File srcFile, String destDirPath) throws RuntimeException {
        List<String> list = new ArrayList<>();
        long start = System.currentTimeMillis();
        // 判断源文件是否存在
        if (!srcFile.exists()) {
            throw new RuntimeException(srcFile.getPath() + "所指文件不存在");
        }
        // 开始解压
        ZipFile zipFile = null;
        try {
            zipFile = new ZipFile(srcFile, Charset.forName("GBK"));
            Enumeration<?> entries = zipFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry entry = (ZipEntry) entries.nextElement();
                log.info("解压" + entry.getName());
                // 如果是文件夹，就创建个文件夹
                if (entry.isDirectory()) {
                    String dirPath = destDirPath + File.separator + entry.getName();
                    File dir = new File(dirPath);
                    dir.mkdirs();
                } else {
                    // 如果是文件，就先创建一个文件，然后用io流把内容copy过去
                    File targetFile = new File(destDirPath + File.separator + entry.getName());
                    // 保证这个文件的父文件夹必须要存在
                    log.info(destDirPath + entry.getName());
                    list.add(destDirPath + entry.getName());
                    if (!targetFile.getParentFile().exists()) {
                        log.info("父文件不存在");
                    }
                    targetFile.createNewFile();
                    // 将压缩文件内容写入到这个文件中
                    InputStream is = zipFile.getInputStream(entry);
                    FileOutputStream fos = new FileOutputStream(targetFile);
                    int len;
                    byte[] buf = new byte[1024];
                    while ((len = is.read(buf)) != -1) {
                        fos.write(buf, 0, len);
                    }
                    // 关流顺序，先打开的后关闭
                    fos.close();
                    is.close();
                }
            }
            long end = System.currentTimeMillis();
            log.info("解压完成，耗时：" + (end - start) + " ms");
        } catch (Exception e) {
            throw new RuntimeException("unzip error from ZipUtils", e);
        } finally {
            if (zipFile != null) {
                try {
                    zipFile.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return list;
    }

    /**
     * @param filePath 临时文件的删除
     *                 删除文件夹里面子目录
     *                 再删除文件夹
     */
    public static void deleteFiles(String filePath) {
        File file = new File(filePath);
        if ((!file.exists()) || (!file.isDirectory())) {
            log.info("file not exist");
            return;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
            if (filePath.endsWith(File.separator)) {
                temp = new File(filePath + tempList[i]);
            } else {
                temp = new File(filePath + File.separator + tempList[i]);
            }
            if (temp.isFile()) {
                temp.delete();
            }
            if (temp.isDirectory()) {
                deleteFiles(filePath + "\\" + tempList[i]);
            }
        }
        // 空文件的删除
        file.delete();
    }
}
